The Trijicon RMR (Ruggedized Miniature Reflex) Reflex Sight is an excellent tool that improves precision and accuracy with increased speed of target acquisition. The RMR is built from the ground up to stand up to the rigors of extreme duty and combat use while still holding zero for the utmost reliability and durability. The addition of the innovative adjusters with audible clicks allows shooters to quick change windage and elevation adjustments on the fly. The Trijicon RMR is truly for the discerning shooter who wants the very best and refuses to accept anything but.